Coffee-pot



(No Model.)

w. F. GRAF.

COFFEE POT.

(Application filed Nov. 28, 1898.)

@bm M Patented May I6, 1899.

NITED STATES PATENT OFFICE.

-WILLIAM F. GRAF, OF CINCINNATI, OHIO.

COFFEE-POT.

SPECIFICATION forming part of Letters Patent No. 624,924, dated. May 16,1899.

Application filed November 28, 1898. Serial No. 697,612. (No model.)

To aZZ whom it may concern:

Be it known that 1, WILLIAM F. GRAF, a citizen of the United States, anda resident of Cincinnati, in the county of Hamilton and State of Ohio,have invented a certain new and useful Improvement in Coffee-Pots, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, forming part of thisspecification.

The object of my invention is to produce a coffee-pot which shall besimple in its construction and operation and by which the contents ofcoffee may be readily subjected to a second scalding, whereby the fullflavor and aroma are extracted. It consists of a double pot providedwith an interior receptacle for the coffee-grounds,said receptacle beingmade in the form of a strainer, so as to permit the water to passthrough the coffee-grounds, and so arranged that by inverting it theliquid will again pass through the coffee for a second scalding, as willbe more fully hereinafterdescribed.

In the accompanying drawings, Figure 1 is a side elevation of thecoffee-pot complete. Fig. 2 is a vertical cross-section of what I havecalled the scalder. Fig. 3 is a plan View of a disk of wire-gauzeprovided with a circular peripheral flange. Fig. 4 is a simple I disk oftin or sheet metal, whose use will be hereinafter explained. Fig. 5 is adetail view of the lock for attaching parts together.

In Fig. 1, A represents an ordinary coffeepot entirely open at the topfor the reception of what I have called the scalder.

In Fig. 2, B B represent the walls of a vertical cylinder, made in twoparts, withabead or flange b. This cylinder, however, may be made in onepart, if so desired. The upper end of this cylinder is provided with ahorizontal and vertical flange O G forconvenience in attaching theparts.

D is a cylinder or strainer, smaller than the outer cylinder, made ofporous material, the lower end being closed, but of the same material,the upper end being open, and around the upper end are flanges F,though, of course, the cylinder D might be made of larger diameter andthe necessity for the horizontal portion of flange F obviated, the outeror up per end of the flange being horizontal and resting upon the upperend of the vertical flange 0-, so as to hold the cylinder D suspendedwithin the cylinder B. To close the upper end of this cylinder D, aswell as of the scalder B and retain the parts in place and atthesametime form a space J, I place over it the disk E, Fig. 8. This diskis provided with an exterior flange G, with a downward extension, so asto fit over and embrace the neck of the scalder B. When the scalder isinverted, the space J permits any grains that might collect in and tendto clog the opening in disk I to passthrough.

H is a pin or projection on the outside of the vertical flange O,forming the neck: of the scalder, and in the flange G is provided a slotg,- which engages with the'pin H and locks this top disk in place.

' I represents the disk shown in Fig. 4, with a single comparativelysmall opening at or near its center. In Fig. 2 I have shown the disk Iin place when in use. By the use of this disk I the outward flow of theWater in the scalder B when the same is inverted will be retarded andproduce a slow seepage and a morethorough percolation of thescaldingwater through the entire body of the ground coffee, thereby moreeffectually extracting the substance of the coffee and making a strongerbeverage.

It will of course be understood that in place of the one opening in thedisk I, as shown, a number may be made, but located so as to confine thepassage of the liquid through the central part of the disk, and thusinsure the thorough percolation of the liquid through the coffee. Inorder to hold this disk I immediately against the cylinder D, a verticalflange maybe put thereon of a size sufficiently large to come up againstthe cap or disk E, thereby holding itimmovably against the top ofcylinder D.

The cylinder D, Fig. 2, being filled with the coffee-grounds and thedisk I not being in place, but the other parts all being arranged asshown in Fig. 2, scalding-water is poured V into the top, which flowsdown through the cylinder D and its contents and passes out into thebody of the scalder. The scaldingwater having been poured over the codesand seeped through it and the disk E and diskI having been put in placethereon, the scalder IOO is then inverted and the upper endis insertedinto the coffee-pot A. This will naturally cause the liquid contents ofthe scalder to flow back again through the cylinder D and into thecoffee-pot A, when it is ready for use. The flow of the liquid contentsfrom the scalder into the pot A, especially when using disk I with asmall opening, would not take place or continue to any extent whenusinga pot whose spout is provided with a valve or flap, as the airwhich will necessarily be in the pot A, not having any means of escape,will entirely stop or hinder the flow of the liquid from the scalderinto the pot A unless means are provided for the proper escape of theair from the pot A. It is for this purpose that I provide pipe K,opening at the top of scalder B and running down and opening near thebottom on the inside of the scalder, as seen in Fig. 2. This pipe Kpermits the air in the pot A to pass up through it and into the scalderon top of the liquid, thereby permitting its uninterrupted flow into thecoffeepot A. The coffee-pot may then be placed on the stove to be keptsufficiently hot and the coffee maybe served from the pot,as isrepresented in Fig. 1, or the scalder may be removed and an ordinary lidput on the coffeepot.

P is a valve at the mouth of the spout to retain the steam and vapors,and if the coffeepot begins to get too hot and generate too much vaporit will open and signify the condition.

I have described this as a coffee-pot and as intended for that use; butit will be understood, of course, that it may be used in making tea orother similar articles where the flavor and aroma are to be extractedand absorbed by water.

I am aware that it is not new to use a double coffee-pot in which thecoffee-grounds are contained in a receptacle upon the inside; but

What I claim as new, and desire to secure by Letters Patent, is-

1. The herein-described scalder, adapted to be invertedly supported upona main reservoir A, comprising a vessel [13, a porous receptacle orstrainer D contained within the vessel 13 and open at its top to receivethe coii'ee and arranged to permit the Water to pass through the coffeeand receptacle into the vessel B, a removable disk I constructed to fitover the open end of the vessel B and receptacle D and perforated onlyat or near the middle point of the open end of the receptacle D, and astrainer-cap E removably secured over the disk, whereby in use the Waterwill be passed through the coffee and porous receptacle into vessel Bwhen the scalder is in one position and back through the receptacle D,coffee and perforation in disk I into the main reservoir when invertedlyseated upon the reservoir, substantially as sliown and described.

2. The hereimdescribed scalder comprising the vessel B constructed to bein vertedlysupported upon a main reservoir A and having the verticalflange O, the porous receptacle or strainer D contained within thevessel 13 and having the vertical flange F with a part resting on flangeO, a strainer-cap E having a flange G resting upon flange F and alsoprovided with a downwardly-extending flange surrounding flange C, andmeans for securing said downwardly-extending flange to the verticalflange (l, substantially as shown and described.

WILLIAM I GRAF.

Vitnesses:

GEORGE I-IEIDMAN, EDWARD I-IAAT.

